Zheyu Ma bd6f1fd5d3 net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe() ... During driver initialization, the pointer of card info, i.e. the variable 'ci' is required. However, the definition of 'com20020pci_id_table' reveals that this field is empty for some devices, which will cause null pointer dereference when initializing these devices. The following log reveals it: [ 3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci] [ 3.975181] Call Trace: [ 3.976208] local_pci_probe+0x13f/0x210 [ 3.977248] pci_device_probe+0x34c/0x6d0 [ 3.977255] ? pci_uevent+0x470/0x470 [ 3.978265] really_probe+0x24c/0x8d0 [ 3.978273] __driver_probe_device+0x1b3/0x280 [ 3.979288] driver_probe_device+0x50/0x370 Fix this by checking whether the 'ci' is a null pointer first. Fixes: 8c14f9c703 ("ARCNET: add com20020 PCI IDs with metadata") Signed-off-by: Zheyu Ma <zheyuma97@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2022-03-03 10:29:13 +00:00
..
arc-rawmode.c	networking: make skb_push & __skb_push return void pointers	2017-06-16 11:48:40 -04:00
arc-rimi.c	net: remove single-byte netdev->dev_addr writes	2021-10-13 10:03:59 -07:00
arcdevice.h	net: remove single-byte netdev->dev_addr writes	2021-10-13 10:03:59 -07:00
arcnet.c	arcnet: use new tasklet API	2021-02-02 15:51:17 -08:00
capmode.c	arcnet: capmode: remove redundant assignment to pointer pkt	2019-08-30 14:14:46 -07:00
com90io.c	net: remove single-byte netdev->dev_addr writes	2021-10-13 10:03:59 -07:00
com90xx.c	net: remove single-byte netdev->dev_addr writes	2021-10-13 10:03:59 -07:00
com9026.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
com20020_cs.c	net: remove single-byte netdev->dev_addr writes	2021-10-13 10:03:59 -07:00
com20020-isa.c	net: remove single-byte netdev->dev_addr writes	2021-10-13 10:03:59 -07:00
com20020-pci.c	net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()	2022-03-03 10:29:13 +00:00
com20020.c	net: remove single-byte netdev->dev_addr writes	2021-10-13 10:03:59 -07:00
com20020.h
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
rfc1051.c	networking: make skb_push & __skb_push return void pointers	2017-06-16 11:48:40 -04:00
rfc1201.c	networking: make skb_push & __skb_push return void pointers	2017-06-16 11:48:40 -04:00